CVE-2026-107177

Express Gateway through 1.16.11 contains a hardcoded cryptographic key vulnerability that allows attackers with datastore access to decrypt stored OAuth 2.0 token secrets via the default crypto.cipherKey 'sensitiveKey'. Attackers who can read Redis can decrypt tokenEncrypted values and combine them with stored token IDs to obtain valid bearer tokens for any user.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.7 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/ExpressGateway/express-gateway
https://github.com/ExpressGateway/express-gateway/blob/45612814d12f65889ef3bdf80b2ed7ab9b557736/lib/config/system.config.yml#L15-L22
https://github.com/ExpressGateway/express-gateway/blob/45612814d12f65889ef3bdf80b2ed7ab9b557736/lib/services/utils.js#L18-L28
https://github.com/ExpressGateway/express-gateway/issues/1078
https://www.vulncheck.com/advisories/express-gateway-through-1.16.11-hardcoded-default-cipherkey-exposes-oauth-tokens
https://github.com/ExpressGateway/express-gateway/issues/1078

Configurations

No configuration.

History

07 Oct 2026, 18:17

Type	Values Removed	Values Added
References	~~() https://github.com/ExpressGateway/express-gateway/issues/1078 -~~	() https://github.com/ExpressGateway/express-gateway/issues/1078 -

07 Oct 2026, 13:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-07 13:17

Updated : 2026-10-07 18:17

NVD link : CVE-2026-107177

Mitre link : CVE-2026-107177

CVE.ORG link : CVE-2026-107177

JSON object : View

Products Affected

No product.

CWE

CWE-1394

Use of Default Cryptographic Key

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